Reply 20 of 73, by treeman
yes I follow your logic totally. I re tinned the connections on the big umc chip, then it got me thiking about what you said about the signal from the ram to the chipset. So while I was at it I thought ill strip all the traces that head from the chipset in the direction of the ram and cache. Not a big job to tin them up while got eveything out.
a pretty quick job after scrubbing the traces my concentration is fading and unfortunately still stuck in the same roller coaster
Sometiems 64k sometiems 640k
Next step go further with the traces, I won't be taking off the ram slots but ill take off the cache chips and strip more traces that are in the area and retin
It makes sense that the signal coming from the ram to the chipset or chipset to bios gets corrupted somwhere.
I can't find the bios image for this board anywhere so the best I could do is save my bios and write it to a eeprom chip which gave the same results.
Few days rest and ill do more traces